#include<bits/stdc++.h>
using namespace std;
int n,a[100005],out[100005],ans;
int main()
{
	freopen("duel.in","r",stdin);
	freopen("duel.out","w",stdout);
	cin>>n;
	ans=n;
	for(int i=1;i<=n;i++) cin>>a[i];
	sort(a+1,a+n+1);
	int now=1;
	for(int i=1;i<=n;i++)
	{  
		if(a[i]==a[now]) continue;
		out[now]=1;
		ans--;	
		now++;
	}
	return 0;
}
